I have done everything you suggest - over and over again - and nothing changes. I have checked every backlist, etc. The server is Gmail. All addresses sent to spam are on my white lists.
If your Gmail account Inbox emails are showing ok online in your Inbox, but going into the Junk folder or another folder in eM Client, then you normally have some sort of rule setup in eM Client causing that as @Gary advised.
So as you cannot find it in your eM Client rules, Try then for a test “unchecking everything in your Local Rules” and then close and reopen eM Client. Then see if your Gmail inbox emails stay in your eM Client Gmail inbox.
Also as @Gary advised you in another thread on this subject, you may have added the Gmail domain to your Blacklist, so “dbl-check your Blacklist again” via either Manage Blacklist, or via “just dbl-clicking Blacklist in the Rules window”